Tory former minister Baroness Warsi, who knows members of Talha's family, said the Government should engage with Muslim groups even if their views were considered unpalatable to help tackle radicalisation.

She said: "How can we start to resolve an issue when we haven't clearly defined what the problem is and we don't know how people end up where they end up?

"It is incredibly odd and incredibly worrying that, over time, more and more individuals, more and more organisations, are considered by the Government to be beyond the pale and therefore not to be engaged with."